Sv-1257mg+ savox - sv-1257mg+ digital high voltage coreless servo, metal gear features: - leading edge digital servo technology - high efficiency coreless motor - accurate and fast response - super high resolution - aluminium center case for improved motor cooling and total strength - ball beared - precision metal gears technical specifications: servo technology: digital high voltage input voltage (v): 6. 0v - 8. 4v servo type / size: midi motor type: coreless motor gear material: metal gears ball beared: ball beared servo case: aluminium - composite speed 60â°/sec @ 6. 0v: 0. 07 sec/60â° torque kg/cm @ 6. 0v: 2. 5 kg/cm speed 60â°/sec @ 7. 4v: 0. 055 sec/60â° torque kg/cm @ 7. 4v: 4. 0 kg/cm length (mm): 35. 0 mm width (mm): 15. 0 mm height (mm): 29. 2 mm weight (g): 30 g connector type: jr spline size: 25t spline (sav-sv1257mg)